Software Development Engineer 3 (SDE 3)

About this role

About MelodyArc

MelodyArc delivers consistent outcomes for the work AI can't do alone — orchestrating data, rules, AI, and people in one governed system, with a full record of why. Our orchestration core (the Point Engine) lets enterprise operations teams configure agentic AI Operators that execute work end-to-end while leveraging existing business logic and human-in-the-loop workflows.

Role Overview

As an SDE 3, you'll be a senior, hands-on engineer and technical leader who ships business-critical capabilities on tight timelines. You will own the design and delivery of multi-component features, raise the bar on reliability and security, and help scale the team alongside the CTO through code reviews, mentoring, and pragmatic process improvements.

Key Responsibilities

• Design, build, test, and operate scalable backend services (NodeJS/TypeScript) that power MelodyArc's orchestration and workflow capabilities.

• Partner with the CTO to run, improve, and standardize the code review process to ensure increasing quality without excessive overhead or single-person bottlenecks.

• Review designs and code for peers; mentor engineers; and improve shared standards (testing, code quality, CI/CD, documentation).

• Lead the technical delivery of multi-sprint initiatives: translate product requirements into clear technical plans, milestones, and execution tradeoffs.

• Drive system design for reliability, performance, and scalability (e.g., idempotency, retries, rate-limiting, multi-tenant isolation, graceful degradation).

• Build secure, compliant solutions aligned to SOC 2 Type II practices (e.g., least privilege, audit logging, data handling, change management).

• Own production readiness: instrumentation/observability, operational playbooks, incident response participation, and post-incident improvements.

• Partner closely with Product, DevOps, and customer stakeholders to iterate quickly and deliver measurable customer outcomes.

Basic Qualifications

• 6+ years o...